<!DOCTYPE html>
<html>

<head>
    <title>canvas</title>
    <meta charset="utf-8" />
    <script src="jquery-2.1.3.min.js"></script>
    <link href="main.css"   rel="stylesheet" type="text/css" />
</head>

<body>
    <canvas id="canvas">
        不支持canvas
    </canvas>
    <script type="text/javascript" src="script.js"></script>
</body>

</html>
